It’s not so simple, even if you target lifespan extension.
| Harm | Counterfactual outcome | Programmed response to harm | Drawback of response |
|---|---|---|---|
| Invaders | City razed | Siege walls | Starvation |
| Pathogens | Death from infection | Fever | Hyperpyrexia |
| UV-induced mutations | Melanoma | Sunburn | Blisters, peeling |
| Some hallmarks of aging | Cancer, wear-and-tear | Other hallmarks of aging | Frailty, loss of regeneration |